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Finding the Fourth Proportional to 154,054.68, 212,595.72 and 86,071.77

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Solution

The fourth proportional to 154,054.68, 212,595.72 and 86,071.77 is: 118,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,054.68 : 212,595.72 = 86,071.77 : x
  2. Step 2: Convert to fraction form
    154,054.68/212,595.72 = 86,071.77/x
  3. Step 3: Cross multiply
    154,054.68x = 212,595.72 × 86,071.77
  4. Step 4: Simplify right side
    154,054.68x = 18,298,489,914.82
  5. Step 5: Solve for x
    x = 18,298,489,914.82/154,054.68
  6. Step 6: Final answer
    x = 118,779.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.